#include <iostream>
#include <stdio.h>
#include <format>
using namespace std;
/**
 * 输入输出
 */
int main() {

// 1. C标准输入输出
#ifdef SOLUTION1
  int a, b, c;
  scanf("%d", &a);
  scanf("%d", &b);
  c = a + b;
  printf("%d + %d = %d\n", a, b, c);
#endif

// 2. C++标准输入输出
#ifdef SOLUTION2
  int a, b, c;
  cin >> a;
  cin >> b;
  c = a + b;
  cout << a << " + " << b << " = " << c << endl;
#endif 

// 3. C++20输入输出格式化(注意开启插件支持C++20)
#define SOLUTION3
#ifdef SOLUTION3
  int a, b, c;
  cin >> a;
  cin >> b;
  c = a + b;
  cout << format("{} + {} = {}", 1, 2, 1 + 2) << endl;
#endif 
  return 0;
}